When the cold storage facility loses power in the early hours of the morning, cold-chain dispatcher Lu Zhiyuan saves the city's first batch of fresh produce from being ruined. However, Ma Qingkui takes credit for his work, bans his account, and kicks him out of the system. As supply lines serving schools, hospitals, and residential communities successively face emergencies, they turn to Lu for help. He reunites his old fleet and reopens the delivery routes, stabilizing the city's entire cold chain amid torrential rain and supply shortages while uncovering the truth behind Hengyun's chaotic dispatch operations.